# Relationship history for MSHA mine 0202597

Current hierarchy: **Downey Bruce → Dcrs (Us) Ltd → RED TAIL MILL**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Dcrs (Us) Ltd → RED TAIL MILL; 1993-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Downey Bruce → RED TAIL MILL; 1993-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Downey Bruce → Dcrs (Us) Ltd; 1993-06-01 to current/open; source msha-controller-operator-history